Piping, welting, or the like



Sept. 1, 1936. A w, R K b 2,052,661

PIPING, WELTING OR THE LIKE Filed Dec. 17, 1932 Invenior Patented Sept. 1, 1936 H D STATE 72,052,661" f 1 ,5 PIPING, WELTINGQORTBEIKE Aaron Waldo Rockwood signor to Haley, Ca Everett, setts iwis thestaiimssuaste-Rockwoo'd Company,

a s, a corporati n o Massa Application December 17, NQi M'LT-M m 1 Claim. (or. 54 513) My present invention a novel and improved piping, welting, finishing strip, or the like, and is also a novel method of manufacturing same.

Heretofore, in the manufacture "of piping, weltv ing, and the like it has been customary in making such finishing strips to sew or stitch several layers together or to unite them by adhesive, and utilize one of the layers as a means ,for carrying adhesive to attach the finishing strip to the resultant article, such as a shoe, upholstery, automobile, garment, or the like. Much :dimculty has been experienced with such prior methods as bei ig complex, difficult to make and handle, requirin g interposed-strips .to protect the adhesive when the'finished piping is supplied in rolls for use, and, the same deteriorates quickly, viz., where adhesive is employed, the finishing strip must be used promptly before the cement used loses its l fi cy- It is an object of my present invention to eliminate the difficulties heretofore found'wi-th prior methods of manufacture, and the articles produced thereby, to simplify the process and to provide a new and improved piping article which will be capable of use long after it has been manufactured and supplied inrollssix months, or one or two years. This enables these piping strips to be kept in stock and supplied promptly when'called for insteadof requiring same to be manufactured for use on special orders A further novel and improved object of the present invention is to construct a piping strip which will eliminate all danger of the layers becoming separated through deterioration of the cement used. This is a most important'feature, and in prior articles of this type a relatively short lapse of time or exposure to the air would so ,disintegrate or dry up the adhesive employed as to renderthe same useless, and where a plurality .of layers, strips, folds or the like constituted the piping, they would break apart, rendering the entire roll of piping useless.

My present invention obviates such a difficulty, and while two layers are employed, I have unified the same into one homogenous mass by a novel method of coating, treating, and fusing the same.

In carrying out my invention according to the preferred method, I first apply to a cloth or fabric base a pyroxylin coating, or any of the wellknown leather imitation coatings, treating one surface of the cloth or textile material therewith. This may be, and preferably is, done in large sheets. Thereafter I cut strips of appropriate width from such sheets and fold over the edges, keeping the treated surface on the outer side of the :foldi; With the folded strip thus formed, '1 then apply a second similarly treated strip, pref.- erably marrower thanthefcombined folded edge strip as above. This-second Strip will have on one side" the leather imitation, or pyroxylin treated surface, and, -o'n the opposite side, a gum coated surface applied preferably by any of the usual oold' proce's's gum -treated methods, which :will insure-long life and lasting qualities to the gum side. 'iI'then unite the folded strip with the narrow strip, and in this process I effect a fusion of tne'pyrexylin treated surface. i I find that by drawing stripvrlth the pyroxyl-in treated surface i-n contact with the application of suitable solution that-these surfaces will be softened and, thereafterg'can'be pressed together in intimateassociation, fusing the surfaces into a homogenousinass, and preventing any separation of-the layers-ithusuni'ted in any use to which thepiping is normally subjected. I, -With the bons'tructien as above briefly outlined, if then cut the folded-edges'a-part, preferably by a usual lz ig zag -line, -thus leaving a srna'llamount of the narrowfstripon each piping edge and with the extreme folded edge free-of the gum. This process is claimedin mycopending application Ser. No. 702,494; filled Dec; "l5,' 1933; now Patent No. 2,001,693 dated May "lei, 1 935 and in the present case I am claiming theinvention as an improved -article of manufacture.

. pi n l hus ma an b rolled o ts p lsbbpls or he l kew ho tth n s y of terposing afsepalrate layer .of non-adhesive mat rial, t k p t same f om a he to s lf. betwen he succes ive in in of h i g- Thepold process side will not dry up and is ready for instant u se, t a y t m m d ately a r manuf tur at th nd of o pe iod u as.,mariyfmonths, or even years.

. pr pt .rne'thod also eliminates the prior 40 necessity Zof 'bllfi ng' or skiving and provides a .methodgof manufacture free from numerous sepgrate handling and treating operations.

Other objects of the invention, novel combination of parts, and advantages will be hereinafter more fully pointed out and claimed.

Referring to the drawing illustrating a preferred method of manufacture, and the novel article of my present invention:

Fig. 1 is a view showing the cloth or textile base of the layer which is afterward to be folded;

Fig. 2 illustrates the same with the imitation leather supplied on one surface;

Fig. 3 shows the same in strip formation with the edge portions folded, these figures being on a greatly enlarged scale;

Figs. 4, 5, and 6 are corresponding views of the cloth base, pyroxylin treated surface, and gum treated opposite surface of the narrow strip, also on an enlarged scale;

Fig. '7 is a diagrammatic View illustrating the method of uniting the folded strip of Fig. 3, and the narrow backing of Fig. 6;

Fig. 8 shows the strips united after the proceess of Fig. '7 also on an enlarged scale, and

Fig. 9 shows the completed piping separated.

.the narrower strip, and same is indicated at 4,

5 being the pyroxylin or imitation treated surface of this strip. The broadest strip for the piping is then put through a folding operation so that the edge portions of the finished .cloth will each be folded outwardly, as-indicated in Fig. 3, these folded edges being designated at 1 and 8. i

The narrower strip intendedto-carry the-adhesive has a suitable coating 6 appliedto'the backing I on the opposite surface to that to which the finish 5 is applied, this coating 6 beingpreferably any gum of any lasting quality, and which can be applied to the base I preferably, by a cold process. The two strips thus formed are then united, the completed folded strip being designated as H), and the narrow strip as I2. I Referring to Fig. 7, a quantity of the folded strip l may be supplied in a container [4 and a corresponding quantity of the narrow strip 12 in a similar container IS. The folded strip) is then laid around a series of friction rolls I1 andan idler 48, with the top portion in contact with a'tank 20 containing any suitable solution which will soften the imitation leather or pyroxylin treated surface 2 of the strip-l0. This may be fed through a nozzle- 2| onto the surfaced of the-folded strip I0 or througha sponge or in any other suitable inannerwaSimilai'ly, the narr strip l2 isled from its container. l around. a series of friction rolls. 22 and an idler 23, .with its surface 5 on the uppermost sideto receive a isimilan "application of solution from the, tank 24. The respective. surfaces- 2 and 5 of these strips being of the same, 'or. substantially the same, substance, so that the solution 25ficon tained in the tanks 20 and 24 will; soften or cut the; same as thestrips are drawngbythetanks, will render their contacting surfaces 2 and 5' thus s'oftenedand ready for contact with each other into a fusion or homogenous mass by "conducting the two strips through pressure rolls 28 and 29, one of which rolls is preferably actuated by a spring 30, and thus the two strips arerolled into one, as shown in cross-section on the line 8-8 of Fig. 7, and as shown in Fig. 8 on an enlarged view.

[The completed. strip designated as 33 may be collected in a container 35. From the container 35 the now combined strip 33 is'preferably run through a suitable cutting process, preferably on a zig-zag line as is customary,- and as clearly shown in Fig. 9, thus separating the combined strip, 33 into the two piping strips38 and 39, each with a folded edge I or 8 for the finish ing piping portion, and with the cold adhesive 6 for the subsequent application of the piping strip to any article desired. The completedpiping strips 38 and 39 thus formed are then rolled between the usual paper strips on reels for storage, transporting, and subsequent unwinding for use. When it is to be used and, during the unwinding, the gum coated surface 6 is moistened as above explained and the piping strip is ready for instant application and use.

While I have explained the uniting or fusing of the two strips 2 and 4 of similar material, such as any of the imitation leathers used, or pyroxylin treatments, it will be appreciated that other coatings may be employed which will fuse together by the, softening or coating of each surface with a suitable solution as above noted, the im portant feature beingthat these surfaces when thus treated and brought in contact under'pressure will present a solidified or fused adhesion as indicated at'll, Fig. 8. This is one of the important novelties of my present invention, and I wish toclaim the same herein broadly.

Furthermore, the use of the folded strip with a gum, such as 6, which will maintain its qualities during long periods of time and storage, and

which can be used without treating, moistening,

or heating, or by similar'agencies to render same tacky and adhesive, and is always readyfor'instant use, is, I believe a distinct novelty in this art and Iwish to claim same hereinbroadly.

' Furthermore, the method of manufacturing, andthe completed article, wherein the two sur: faces are fused together of a'pair of strips is, I

'am advised, a distinct novelty and is claimed AARON WALDO ROCKWOODF 

